Reads better with attachements. Hello, I'm back with new code. This one doesn't work on my sis735 either :-( but after having triple-checked my code I don't see why :-((. Time to show the code to others... If someone familiar with pci-ide code could just take a quick look... The goal is only working ata-100 inits. There's code in sis5513.c that could use a little cleanup but I'll wait working ata-100 inits to work on that. You have an edited (commented) diff from original sis5513.c and the real patch attached. A complete new sis5513.c is available for more conveniance at : http://gyver.homeip.net/sis5513.c LB.